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Following headswap, 'df' and other operations hang via NFSv3

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Category:
ontap-9
Specialty:
nas
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Applies to

  • ONTAP 9
  • NFSv3

Issue

  • After a headswap, running commands like df or ls against preexisting NFS mounts results in an indefinite hang
  • Packet traces from both the client and server show that client attempts to reestablish its connection to the server but the TCP SYNs are never received by the server
  • Rebooting the clients appears to clear up the issue for any given client.

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